Hi all,
I apologise if this is the wrong section of the forum or the wrong forum to actually post a question to. I have searched the forums here and haven't been able to find something similar around my problem and sorry for the long story below.
I have an alarm system which has a relay board in it to operate external outputs (12v). The alarm system has settings per relay output to adjust the pulse time from 1 second to 60 seconds. I have successfully connected two outputs to two garage doors (tilt doors), which enables me to open them with the alarm system (pulse time is set to 5 seconds which these two doors don't have an issue with). I have tried connecting a third garage door (roller door - different motor to the other two), but am having an issue.
With the Pulse time set to 1 second, and activating the relay output, the door will open about 15cm's and then stop. After investigating further, it appears that the garage door motor for this roller door is very sensitive - if I connect the wires together very quickly and remove (so not connected to the alarm at the moment, just testing the motor), the door opens all the way fine, and the reverse when closing. If i connect the wires together and hold for 1 second (replicating the pulse time of the alarm), the door will only open about 15cm's (same issue as the relay output on the alarm.) So it seems that a 1 second pulse time is too long for the relay.
I have been searching but can't find a relay that has a adjustable pulse time from 1 second to perhaps milliseconds as i believe that this is what is needed (i can have the alarm relay drive another relay that has a millisecond pulse time and run the door of this).
Is there any way around this issue or do you guys know of where I can get a millisecond pulse time relay or adjust a standard relay's pulse time?
Thanks in advance, and I apologise, i'm not very good when it comes to electronics.
Regards
Kristopher
I apologise if this is the wrong section of the forum or the wrong forum to actually post a question to. I have searched the forums here and haven't been able to find something similar around my problem and sorry for the long story below.
I have an alarm system which has a relay board in it to operate external outputs (12v). The alarm system has settings per relay output to adjust the pulse time from 1 second to 60 seconds. I have successfully connected two outputs to two garage doors (tilt doors), which enables me to open them with the alarm system (pulse time is set to 5 seconds which these two doors don't have an issue with). I have tried connecting a third garage door (roller door - different motor to the other two), but am having an issue.
With the Pulse time set to 1 second, and activating the relay output, the door will open about 15cm's and then stop. After investigating further, it appears that the garage door motor for this roller door is very sensitive - if I connect the wires together very quickly and remove (so not connected to the alarm at the moment, just testing the motor), the door opens all the way fine, and the reverse when closing. If i connect the wires together and hold for 1 second (replicating the pulse time of the alarm), the door will only open about 15cm's (same issue as the relay output on the alarm.) So it seems that a 1 second pulse time is too long for the relay.
I have been searching but can't find a relay that has a adjustable pulse time from 1 second to perhaps milliseconds as i believe that this is what is needed (i can have the alarm relay drive another relay that has a millisecond pulse time and run the door of this).
Is there any way around this issue or do you guys know of where I can get a millisecond pulse time relay or adjust a standard relay's pulse time?
Thanks in advance, and I apologise, i'm not very good when it comes to electronics.
Regards
Kristopher